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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233
<br /> Analytical 1900 Bates Avenue Suite L Concord,CA 94520 (510) 686 9600 FAX(510)686 9689
<br /> 819 Sinker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100
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<br /> RESNA Client Project ID W0309 01 Gardner Property
<br /> `11710 Main Street Matrix Liquid
<br /> `,Escalon, CA 95320
<br /> Attention John Lane OC Sample Group 4CJ8502-3 _ _ Reported _ Apr 8, 1994,`
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<br /> QUALITY CONTROL DATA REPORT
<br /> ANALYTE Benzene Toluene Ethyl Xylenes
<br /> Benzene
<br /> Method: EPA 8020 EPA 8020 EPA 5020 EPA 8020
<br /> Analyst: k Maralit A Maralit A.Maralit A. Maralit
<br /> MS/MSD
<br /> Batch#. 4CJ2702 4CJ2702 4CJ2702 4CJ2702
<br /> Date Prepared- - - - -
<br /> Date Analyzed 4/5/94 4/5/94 4/5/94 4/5/94
<br /> Instrument 11.13 #: GCHP-17 GCHP-17 GCHP-17 GCHP-17
<br /> Conc. Spiked: 10ug/L long/L 10ug/L 30ug/L
<br /> Matrix Spike
<br /> % Recovery, 85 86 85 83
<br /> Matrix Spike
<br /> Duplicate%
<br /> Recovery: 78 80 8o 80
<br /> Relative %
<br /> Difference. 86 72 so 34
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<br /> LCS Batch#- - - -
<br /> Date Prepared: - - - -
<br /> Date Analyzed - - - -
<br /> Instrument I D #' - - - -
<br /> LCS %
<br /> Recovery: - - -
<br /> % Recovery
<br /> Control Limits: 71-133 72-128 72-130 71-120
<br /> Please Note
<br /> The LCS 1s a control sample of known,interferent free matrix that is analyzed using the same reagents,
<br /> EOUOIA ANALYTICAL preparation,and analytical methods employed for the samples The matrix spike Is an aliquot of sample
<br /> R fortified with known quantities of specific compounds and subjected to the entire analytical procedure H
<br /> !I/�T the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix
<br /> v r l l interference,the LCS recovery 1s to be used to validate the batch
<br /> Vicine Tague lark
<br /> Project Manager 4CJ8501 WAT <3>
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